C rim ping-tool



(No Model.)

L. L. RowB.

RIMPING TOOL.

No. 354,657.v

mmm-,ed Dec. 2'1, 1888,

D w WWW] W lx. Iw/MAI z W 5 ma UNITED STATES PATENT OFFICE. v

L. LEROY ROWE, OF BOSTON, MASSACHUSETTS.v

CRlMPlNG-TOOL.

SPECIFI'ATION forming part of Letters Patent No.v 354,657, date December 21, 1886.

- Application fiiea .Inne 28,1886. serialno. 206,458. (No model.) i

T0 all uhom it may concrn:

Be it known that I, L. LEROY ROWE, of Boston, in the county of Suffolk and State of Massachusetts, a citizen of the United States, have invented a new and useful Improvernent in Devices for Orimping the Ends of Stove or other Sheet-Metal Pipe, of which the following is a full, clear, andl exact description, reference being had to the accompanying drawings,forming a part of this specification, in explaining its nature.

It is very desirable to provide means whereby stove and other Sheet-metal pipeof a uni form diaineter throughout can be quickly and easily united. Her'etofore this has often been done by slitting the end of one pipe so that it may be bent inward somewhat and overlap and thcreby form an end section of less diameter, which will enter the end of another section of pipe of the same diameter. This method of reducing the diameter of a pipe is objectionable becauseit is necessary to cut the pipe, and because, so far. as I am aware, there are no means by which it can be done expeditiously. Another way of reducing thediameter of the pipe is to form corrugations therein which eXtend from the end backward, gradually decreasing in depth. This provides the end of the pipe with a gradual and regular, taper. In order to accompli'sh this result, however, it is desirable to employ a tool having two jaws, each of which is provided with parallel proj ections and recesses, the proj ections of each jaw being 'arranged to enter the recesses of the other; It is also necessary that these jaws be supported in a manner to permit one to be inoved in relation to the other with a'very considerable force or pressure, and my invention relates to a device or tool of this character.

Referring to the drawings, Figure 1 is aview in perspective of a section of a Sheet-metal pipe of the same diameter throughout. Fig. 2 is a perspective view of the entire section of pipe, showing its end reduced in size or taper by corrugations formed theren. Fig. 3 is a view in perspective of the complete crimpin'gtool. Fig. 4 isa view in perspective of a movable jawforming a part thereof. Fig. 5 is a Vertical central section thereof. Fig. 6 is a crosssection upon the line a: a: of Fig. 5.

A represents one jaw of the tool or device, and A' the other.

The jaw A has the recesses a and projections a', and t'he jaw A'has the recesses a2 andv projections al, so arranged in relation to the recesses and projections of the jaw A that the projections a' of the said jaw A enter the recesses a2 of the jaw A',v while the projections aa of the jaw A' shut or close into the recesses a of thejaw A.

The jaw A' is formed at the end of a short arm, e', which is pivoted at ez to the 'section A2, upon which the jaw `A is formed, and it is provided with a movement toward the jaw A by means of the Operating arm or lever O, which is pivoted at e to a projection or hood, E, extendingfrom the part Az of the tool, and which has a projection or roll, 84, adapted 'to bear upon the upper surface of the jaw A'.

The lever or arm O is so pivoted and the projection or roll ett so arranged in relation to the pivotal point that upon the movement of the lever awayfrom the handle A3 the projection or roll is inoved away from the surface of the lower jaw, A, and permits theupper jaw, A', to be nioved upward, or away from the lower jaw, by means of the spring ea..

The hood or projection E has a recess which partially covers or incloses the upper jaw, A', and the pivot e and bearing projection or roll e* being arranged in relation to the jaw A' and its pivot ez, as shown, enables the jaw to be 'i moved against or toward the jaw A with Very great force. I

In use the end of the pipe is inserted between the two jaws'and' the jawsbrought together thereon and a section of'the pipe,

Having thus fully described my invention,

I claim and desire to secure by Letters Patent of the United Statesf' '1. In a crimpingitool, the combination of a jaw, A, having recesses and projections a a', the section A2, and handle A3,with the jaw A', having the recesses (.f and projections aa,

p and the arm e', pivoted at 8*' to the section A2,

and .the lever or arm C, pivoted at e to the secthe lever or arm C, pivoted at e to the section Io 'tion E, and having the roll or extension 8*, E, and having a roll or extension, e', adapted adapted to bear upon the surface of the jaw to bear upon the surface of the jaw A', and A', substantially as described. the spring ea, Snbstantially as described.

5 2. In a crimping-tool, the combination ofa jaw, A, having recesses and projections a a', L' LEROY. ROWE' the section A, and handle A3, with the jaw A', Witnesses: having the recesses a7 and projeetions (L3, and F. F. RAYMOND, 2d, the arm e', pivoted .at e2 to the section A2, and FRED. B. DOLAN. 

